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    11.
    发明专利
    未知

    公开(公告)号：SE331422B

    公开(公告)日：1970-12-21

    申请号：SE593368

    申请日：1968-05-02

    Applicant: RCA CORP

    Inventor： LEEDOM M

    IPC: G03D3/00 ,  G03D5/00 ,  G03G15/10

    Abstract: 1,186,947. Apparatus for treating textiles. ROA CORPORATION. 23 May, 1968 [23 May, 1967], No. 24630/68. Heading D1L. [Also in Division G2] A liquid dispenser for applying a liquid developer 12 (Fig. 3) to a surface bearing a latent electrophotographic image comprises a container 10 having a reservoir, an elongated manifold 44 positioned on the top wall of the reservoir and having a feed opening 42 communicating with the exterior of the container, a pump 64 Fig. 2 for forcing liquid in the container into the manifold and out through the feed opening, a trough 47 surrounding the manifold for collecting excess liquid flowing through the feed opening, and a return passage 60, 62 from the trough to the reservoir. A rotatable magnetic member- 80 is magnetically coupled to impeller 64, and forces the liquid through channels 72, 74, 76 to manifold 48, glass or stainless steel wool 116 being disposed in the manifold to control and distribute the liquid. A standpipe 132 communicating with a drain 138 serves to maintain a constant pressure in the liquid supply, to allow bubbles generated by the pump to escape and to allow a greater volume flow through the pump thereby assisting mixing of the developer. A latent image is formed on a photoconductive surface 14 of a paper web 16 by contact with a cathode-ray tube face plate 106, an initial charge being given from corona discharge devices 100, 102. The web passes over a roller 46 so as to be slightly spaced from the feed opening 42 defined by two parallel spaced apart developing electrodes 52, 54. Return passages 60, 62 extend towards the bottom of the reservoir to minimise oxydation of the developer through contact with the air. The container is designed as a unit to permit portability and is therefore fully sealed, the developer being introduced into the container through a threaded aperture (34) (Fig. 6, not shown) which is then sealed with a screw plug (36). A vent passage (38) is located near the aperture (34). The feed opening and trough may be sealed by a plastic strip or adhesive tape during transit.

    SIGNAL SYSTEM FOR A DISC RECORD PLAYER
    16.
    发明专利
    SIGNAL SYSTEM FOR A DISC RECORD PLAYER 未知

    公开(公告)号：HK26380A

    公开(公告)日：1980-05-23

    申请号：HK26380

    申请日：1980-05-15

    Applicant: RCA CORP

    Inventor： LEEDOM M

    IPC: G11B3/085 ,  G11B3/31 ,  G11B3/42 ,  G11B3/46 ,  G11B19/20 ,  G11B21/26 ,  G11B21/04 ,  G11B21/18 ,  G11B21/22

    Abstract: A pickup cartridge for a video disc player encloses a stylus arm unit comprising a stylus arm carrying a stylus at one end thereof. A connector plate is secured to the other end of the stylus arm via a compliant member. A spring at the stylus carrying end of the stylus arm releasably retracts the stylus arm to a position within the confines of the cartridge. A diaphragm flexibly suspends the connector plate in the cartridge at an angular orientation relative to the cartridge so that, when the stylus arm is held in the retracted position in the cartridge, the compliant member is not under stress. When the cartridge is installed in the video disc player, a support member engages the connector plate to change its orientation with respect to the cartridge such as to permit the stylus to be moved to protrude outside the confines of the cartridge without bending or stressing the compliant member.

    PICKUP ARM CARTRIDGE
    17.
    发明专利
    PICKUP ARM CARTRIDGE 未知

    公开(公告)号：ZA756947B

    公开(公告)日：1976-10-27

    申请号：ZA756947

    申请日：1975-11-05

    Applicant: RCA CORP

    Inventor： LEEDOM M

    IPC: G11B3/10 ,  G11B3/12 ,  G11B21/20 ,  G11B21/26 ,  G11B25/04

    Abstract: A pickup arm cartridge houses a fragile signal pickup assembly of a video disc record player to (1) protect the signal pickup assembly during storage and handling, and (2) facilitate replacement of the signal pickup assembly without any critical manual adjustments or connections. A signal pickup assembly comprises a pickup arm carrying a signal pickup at one end and having its remote end secured to a coupler by a compliant pickup arm support. The coupler is suspended in the pickup arm cartridge such that the suspension, while permitting translatory motion of the coupler, (1) maintains angular orientation of the pickup in signal transfer relation with a disc record, and (2) positions the coupler for engagement with a translatory motion imparting transducer of the player supporting structure when the cartridge is assembled in the player. A leaf spring securely holds the signal pickup assembly in the cartridge during storage and handling. Means are provided for disabling the leaf spring during playback thereby disposing the signal pickup subject to engagement with the disc record.

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